To start things off, the Crusades was a war between the Muslims and Christians for Jerusalem. Both parties told themselves and their men that they were fighting for God. But what they really were fighting for was LAND. Also both parties believed that killing was what God wanted. Former President Bush said ''I believe God wants me to run for president.'' Now comparing the Crusades to Iraq's Invasion, President Bush and the leaders of the Muslim and Christian armies both had the mentality of kind of being a ''profit'' (someone who is sent on earth from God or a messenger from God.)

Sources:
http://www.nationalreview.com/articles/343870/why-did-we-invade-iraq-victor-davis-hanson
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